84972211 has 4 divisors (see below), whose sum is σ = 85101424. Its totient is φ = 84843000.

The previous prime is 84972203. The next prime is 84972227. The reversal of 84972211 is 11227948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84972211 - 2³ = 84972203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84972241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63615 + ... + 64936.

It is an arithmetic number, because the mean of its divisors is an integer number (21275356).

Almost surely, 2^84972211 is an apocalyptic number.

84972211 is a deficient number, since it is larger than the sum of its proper divisors (129213).

84972211 is a wasteful number, since it uses less digits than its factorization.

84972211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129212.

The product of its digits is 8064, while the sum is 34.

The square root of 84972211 is about 9218.0372639733. The cubic root of 84972211 is about 439.6350468953.

The spelling of 84972211 in words is "eighty-four million, nine hundred seventy-two thousand, two hundred eleven".